Welded Stainless Steel Square Tube Structural ERW Hollow Section For Frames Railings
Product Details
Welded Stainless Steel Square Tube
,Railings Stainless Steel Square Tube
,Structural ERW Hollow Section
Welded stainless steel square tube is a hollow structural section with four equal sides, manufactured by forming a flat strip into a tube shape and welding the seam along its length.
Our welded square tubes are produced using high-frequency electric resistance welding (ERW) or TIG welding processes. They offer excellent dimensional accuracy, consistent wall thickness, and a cost-effective solution for structural and mechanical applications.
| Parameter | Details |
|---|---|
| Standard | ASTM A554, A312, EN 10296, JIS G3446, GB/T 12770 |
| Grades | 201, 304, 304L, 316, 316L |
| Size (Width x Width) | 10 mm x 10 mm – 200 mm x 200 mm |
| Wall Thickness | 0.8 mm – 6.0 mm |
| Length | 3000 mm, 4000 mm, 6000 mm (custom cut available) |
| Welding Process | ERW (Electric Resistance Welded), TIG (Tungsten Inert Gas) |
| Surface Finish | Mill finish, Pickled, Polished (No.4, BA, Mirror), Brushed |
| Element | Grade 304 | Grade 316 | Grade 201 |
|---|---|---|---|
| Carbon (C) | ≤ 0.08 | ≤ 0.08 | ≤ 0.15 |
| Silicon (Si) | ≤ 1.00 | ≤ 1.00 | ≤ 1.00 |
| Manganese (Mn) | ≤ 2.00 | ≤ 2.00 | 5.5 – 7.5 |
| Phosphorus (P) | ≤ 0.045 | ≤ 0.045 | ≤ 0.050 |
| Sulfur (S) | ≤ 0.030 | ≤ 0.030 | ≤ 0.030 |
| Chromium (Cr) | 18.0 – 20.0 | 16.0 – 18.0 | 16.0 – 18.0 |
| Nickel (Ni) | 8.0 – 10.5 | 10.0 – 14.0 | 3.5 – 5.5 |
| Molybdenum (Mo) | — | 2.0 – 3.0 | — |
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|---|---|---|
| 304 | ≥ 515 | ≥ 205 | ≥ 35 |
| 316 | ≥ 515 | ≥ 205 | ≥ 35 |
| 201 | ≥ 620 | ≥ 310 | ≥ 30 |
Note: The values above are for reference only. Please refer to the mill test certificate for actual data.
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Consistent wall thickness and dimensional accuracy
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Smooth internal and external surfaces
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Cost effective compared to seamless tubing
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Available in long continuous lengths
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Excellent weldability for fabrication
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Good corrosion resistance
| Feature | Welded Tube | Seamless Tube |
|---|---|---|
| Manufacturing | Formed from strip and welded | Extruded from solid billet |
| Wall Thickness Consistency | Very consistent | Less consistent |
| Length Availability | Longer lengths available | Shorter lengths typical |
| Cost | Lower | Higher |
| Lead Time | Shorter | Longer |
| Pressure Rating | Good for mechanical use | Higher for pressure vessels |
| Best For | Structural, architectural, mechanical | High pressure, critical applications |
Welded stainless steel square tube is widely used across many industries:
Structural & Architectural
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Handrails and guardrails
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Building frames and canopies
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Support columns
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Staircase railings
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Window and door frames
Industrial
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Conveyor system frames
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Machine guards and enclosures
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Equipment supports
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Workbenches and shelving
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Material handling equipment
Commercial & Decorative
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Furniture frames (tables, chairs, shelving)
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Display racks and stands
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Store fixtures
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Signage frames
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Retail displays
Transportation
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Truck and trailer frames
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Bus handrails
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RV and camper structures
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Luggage racks
For quotes, samples, or technical support, please reach out.
Mrs. Zhongcheng Metal
Manager
- Email: zhongcheng@metalsstainlesssteel.com
- Tel: 13309216881
- WhatsApp: 13309216881
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WeChat:
13363905196
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